Cleaning the window,I hurt my finger.为什么clean要用ing是因为句首的动词要加ing还是表原因还是主动语态?

将They are cleaning the window.改为一般疑问句 kite is cleaning the window 改为一般疑问句 They are cleaning the window改成否定句 the window needs cleaning可不可以改成：the window needs to be cleaned? （ ）1、The teacher wants Ben _____ the window.A.clean B.to clean C.cleaning they are cleaning the window mopping the floor or(?)将这些单词连句 let nancy ( )the window A.to clean B.cleaning C.clean can you help me ____ the window a.clean b.cleans c.cleaning The window needs ____ a.to clean b.cleaning 怎么选择? Mr.Brown (is cleaning the window).(就括号部分提问） cleaning the the students are cleaning the clasroom .some are cleaning the window,( )are cleaning the chairs.填other的适当形式,另外要说明 some ...others 和some...the others和some...other和some.the other的区别 After cleaning the floor,I went on to clean the window.为什么打扫要加ING呢 英语选择题The cloth is used to the window.a,clean b/cleaning c/cleaned d/cleans _ What's the matter with you ___While I was cleaning the window ,--What’s the matter with you?--_____ the window,my finger was cut unexpectedly.A.Cleaning B.To clean C.While cleaning D.While I was cleaning 这几个答案选哪个?为什么不能 帮我看下英语作文有何错误,On Friday,some students are cleaning when schOn Friday,some students are cleaning when school is over.Hero is cleaning the window .He clean the window again and again until it is clean enough.May is cleaning the b 一道初中英语首字母填空L_____ in the afternoon when I finished the cleaning , I sat down by the window.填Later还是Late ? 为什么不填另一个? Cleaning the Conference Room